CN101970860B - Method for establishing a blade connection of a rotor blade, a blade connection and a securing element for a blade connection - Google Patents
Method for establishing a blade connection of a rotor blade, a blade connection and a securing element for a blade connection Download PDFInfo
- Publication number
- CN101970860B CN101970860B CN2009801150874A CN200980115087A CN101970860B CN 101970860 B CN101970860 B CN 101970860B CN 2009801150874 A CN2009801150874 A CN 2009801150874A CN 200980115087 A CN200980115087 A CN 200980115087A CN 101970860 B CN101970860 B CN 101970860B
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- blade
- blade joint
- fixed element
- joint
- circular arc
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 125000006850 spacer group Chemical group 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000002650 laminated plastic Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/04—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Connection Of Plates (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Manufacture Of Motors, Generators (AREA)
- Braking Arrangements (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention relates to a method for establishing a blade connection for a rotor blade for a wind energy system, comprising securing elements that are provided preferably in an equidistant manner on a circular arc, for securing the blade connection to the hub. The invention also relates to a blade connection and to a securing element for a blade connection. The aim of the invention is to improve the securing of a rotor blade to the hub of a wind energy system and to also establish and/or provide a suitable blade connection. Said aim is achieved according to the method, in such a manner that securing elements designed in pieces are arranged on the circular arc and are arranged at a distance from each other by means of the distancing elements.
Description
Technical field
The present invention relates to a kind of method that is used to make the blade joint of the rotor blade that is used for wind energy plant, it has the preferred a plurality of fixed elements that equidistantly are provided with each other on circular arc, is used for blade joint is fixed on a hub portion.
The present invention relates to a kind of blade joint and the fixed element that is used for blade joint in addition.
Background technique
By EP1486415A1 method, blade joint and the fixed element of known a kind of the above-mentioned type in principle.
Summary of the invention
The objective of the invention is to improve manufacturing and/or the preparation fixing and improve suitable blade joint of rotor blade in the hub portion of wind energy plant.
Above-mentioned purpose so realizes according to the present invention aspect method, the fixed element that constitutes of piece (st ü ckig/inpieces) be arranged on the described circular arc and utilize spacer element to separate each other.
Should be pointed out that " circular arc " and the nonessential circular distribution of accurately following at this, particularly is not absolute circular when making according to blade joint of the present invention.Though expectation is, the result provides a kind of circular as far as possible and circular fully blade joint, because it is stable especially and can guarantees isotropic power transmission and transmission of torque in connecting the plane, yet (it particularly also can be made and be bonded together by a plurality of part circles) advantageously when making blade joint, making shape that departs from circular arc of vpg connection selection, Kuo Zhang shape particularly, so that consider when the manufacturing of blade joint and/or the alteration of form that occurs later on, promptly, select by making shape cleverly, the possible alteration of form of blade joint spare then causes desirable round-shaped automatically.
Usually the blade joint of rotor blade has such purpose, that is, the power and the moment of rotor blade is imported and is delivered in the hub portion.Be suitable for this purpose particularly well according to blade joint of the present invention, wherein it in addition can simple relatively and cheap manufacturing the, particularly manufacturing in batch in large quantity.
Particularly can by close arrangement a plurality of fixed elements be installed on an arc length on the circular arc, wherein preferably advantageously each fixed element and a spacing holder replace in the trend of circular arc according to the present invention with distributing.Blade joint fixing in hub portion can be more stable thus, perhaps can transmit more power, perhaps can select less radius of arc and therefore save material under the situation of the fixed element of equivalent amount.The particularly advantageous layout of fixed element and to arrange further structure according to the present invention closely be possible, promptly it is characterized in that, use such fixed element, it has roughly tetragonal basically in connecting plane (Anschlussebene) or parallel with it plane, the cross section of preferred rectangle, perhaps use such fixed element, it has roughly foursquare basically cross section or trapezoidal cross section, it has the shrinking side in the circular arc inner radial, and/or use basically the roughly spacer element of bar shaped, it is approximately perpendicular to one and connects the plane orientation, and wherein spacer element can have cross section roughly T shape or the horseshoe nail shape or roughly trapezoidal cross section.
Absorb its stand under load distortion during in the ovalization of rotor blade or the distortion of other stand under load at the spacing holder between each fixed element.Spacing holder should have less rigidity for this reason on its thickness direction, thereby it produces little stress and compensation distortion when distortion.High rigidity in a longitudinal direction is favourable simultaneously, thereby spacing holder is delivered to load the fixed element from rotor blade equally.
The rectangle of fixed element or during foursquare cross section, the trapezoidal shape that spacing holder is particularly mentioned by suitable moulding is guaranteed the uniform gap width between each fixed element that is arranged on the circular arc.
This in addition moulding has advantage, be that fixed element and spacing holder constitute smooth outer surface and internal surface at this, thereby they particularly (as a further structural specifications according to the present invention) be connected to each other by lamination (Laminieren) particularly well and simply, wherein preferably can be enough be, (only) on the radially inner side of structure and radial outside on mounting layer compression molding material (Laminat).In this laminated plastic, can preferably use known glass fibre and/or carbon fiber structural.Additionally can preferably stipulate, at least one fixed element and at least one spacer element utilization resin in the gap that is made of them is filled and is connected to each other, bonding particularly, so as additional give this as the structure of compound body with durability as and further improve the importing and the transmission of power and moment.Can particularly stipulate during fabrication, at least one Sealing is set, be used for not wishing having the resin in the zone that resin enters to stop, for example O shape cast formula of Sealing can for example be set for this reason in place.
Favourable preferably so be provided with when making blade joint of the present invention promptly is used for (preferably before fixed element fixing and during fixing) and locatees at least one positioning device of at least one fixed element and be arranged on blade joint.Fixed element is preferably located and maintenance with suitable manner during the manufacturing at blade joint at this, is firm in blade joint until it.Preferably use a kind of resin injection technique or vacuum injection technique basically for this reason, thereby fixed element can be positioned and keep, until basically roughly the blade joint of the hull shape of sleeve shape or blade joint spare the sclerosis and thus fixed element fix with being positioned.Positioning device can for example comprise a flange, and fixed element is with respect to this flange seal.Flange can for example also have the auxiliary section that at least one is used for fixing element.
An other further formation regulation of the present invention, positioning device are arranged in to the outside of needed vacuum area of resin injection technique or negative pressure region and do not participate in its sealing and the fabrication region that is provided with for blade joint so in a sense by autonomous sealing.Particularly can be enough to this be, for example pass through from the distolateral distolateral seal bridge of the joint side of a fixed element until next fixed element, with the gap between them to external sealed, the i.e. spacer element between them and be positioned at the gap of spacer element and fixed element particularly, and with the gap of the laminated plastic layer of outside.
An ensuing further formation regulation of the present invention, described fixed element or each fixed element are made of metal generally.Advantageously constitute by solid material generally according to each element of the present invention block, thereby they can more simply make, better and more simply the location, better and more fixing, in conjunction with or be embedded into laminated plastic and more stable.
One of the present invention preferred embodiment is characterised in that, use is at diminishing fixed element and/or spacer element on the direction at rotor blade tip, thereby these elements are particularly abutting better on the distribution arrangement of rotor blade and taking root between each laminated plastic layer.This can also obtain supporting by the sealed moulding of shape.This dwindling gradually preferably realized by a side that is arranged on the inclination on the radially inner side respectively.
Ensuing one of the present invention further constitutes regulation, uses such fixed element, and it has bolt hole and is used to import connecting element and/or positioning element.
Fixed element can have the structure of protrusion in principle, promptly for example having had bolt already is used for blade joint is connected with hub portion, perhaps has recessed structure, be that its preferred as the aforementioned structure comprises a bolt hole, perhaps it can at first have neutral structure and for example utilize screw tool to obtain tapped hole after the manufacturing of blade joint.Yet recessed shape is preferred for the reason of structure and manufacturing technology.
For being fixed on, blade joint in the bolt hole of described preferred existence, can be screwed into a bolt or for example so-called T bolt in the hub portion.Bolt hole is preferred for the location and the maintenance of fixed element in manufacture process, and promptly by import a location core body or similarity piece at there, it preferably has cone shape.For reliable importing, bolt hole can promptly for example not be itself to constitute blind hole having perforation or sink and cut portion on the end that connects the plane.The heavy in addition portion of cutting reduces the notch stress that may occur.Must when injecting, vacuum stipulate that particularly protected the and sealing of this bolt hole prevents that resin from entering.This can be by the coaxial and Sealing realization that separate spacing with it with bolt hole and location core body of O shape basically.
Bolt hole can have an internal spiral threads as described in already.It can be cut or be out of shape, so that particularly obtain high dynamic intensity by adding the pressure internal stress.
At first consider to use steel as the metal that is used for fixing element.
An other further formation of the present invention is brought special advantage, i.e. prefabricated parts that become as rotor blade later on to be made of blade joint are particularly as built-in fitting or attaching part.Particularly preferably injecting mould at self a resin can prefabricated a plurality of such member, and then when rotor blade is made, combine and be attached thereto, particularly embed a resin that is used for rotor blade and inject mould with rotor blade as the member of making.
As repeatedly mentioning before already, can stipulate according to the present invention, can select the circle of a sealing or part circle, particularly a semicircle conduct to be used for the circular arc of blade joint.
Correspondingly, can stipulate that according to the circular arc of blade joint, rotor blade comprises one or more such blade joints according to the present invention, the connection root that makes the rotor blade of making have full circle is used to be connected to hub portion.
An other further formation of the present invention is characterised in that blade joint connects the plane from one and constitutes about an arc axis towards the rotor blade tip direction asymmetricly.Can stipulate advantageously according to the present invention that particularly blade joint had been provided for the part of supporting surface shape rotor blade or rotor blade or wing shape (Fl ü gelform) as built-in fitting or attaching part in the end regions freely already at it.
Other further formation regulation of the present invention, blade joint is provided with separating film at least in a part area when it is made, but described separating film stays after the avulsion continuous coarse surface at it again, and this surface can be further processed, japanning particularly.
Blade joint itself for the rotor blade that is used for wind energy plant requires protected; it has the preferred a plurality of fixed elements that equidistantly are provided with each other on a circular arc; be used for blade joint is fixed on a hub portion; it is characterised in that in the solution of above-mentioned purpose of the present invention the fixed element that becomes piece to constitute is arranged on the described circular arc and utilizes spacer element to separate each other.By the solution of the present invention and further constitute the advantage that draws before reasonably having made full use of already method of the present invention and its further constitute and set forth.
In addition with same; the fixed element itself of blade joint that is used for the rotor blade of wind energy plant requires protected, and it is characterised in that in the solution of above-mentioned purpose of the present invention at one and connects cross section tetragonal basically in plane or the parallel with it plane, preferred essentially rectangular.
Description of drawings
Shown in the drawings by its embodiment who draws further feature of the present invention, however protection scope of the present invention is not limited to these embodiments.Accompanying drawing illustrates:
Fig. 1 is along according to the junction surface of blade joint of the present invention or connect the sectional view on plane;
Fig. 2 is according to an embodiment of fixed element of the present invention longitudinal sectional view along the line of representing with II-II in accompanying drawing 3;
Fig. 3 is according to the plan view of the fixed element of Fig. 2;
The enlarged view of the details IV that Fig. 4 gets up at Fig. 2 frame;
Fig. 5 is used for the side view according to an embodiment's of spacer element of the present invention manufacturing blank; And
Fig. 6 is according to the another one embodiment's of spacer element of the present invention end elevation.
Embodiment
Fig. 1 illustrates along the sectional view according to the junction surface of blade joint of the present invention.Shown sectional view is followed a part circle.On this part circle, be provided with a plurality of according to fixed element 1 of the present invention, fixed element square or block constitute roughly basically in the end elevation shown in it.Each fixed element 1 comprises a boring 2, and it has internal thread and is used to be screwed into bolt or set screw.Between each two fixed element 1, a spacer element 4 is set respectively, two embodiments of spacer element shown in Figure 1, promptly first embodiment 4a with T shape end face roughly and one have the roughly second embodiment 4b of the end face of horseshoe nail shape.Keep a gap between spacer element 4 and fixed element 1 respectively, it for example can be filled resin.
In order to connect and to fix the frame (Kranz) that constitutes by fixed element 1 and spacer element 4, an interior layer and an exterior layer that connects material 3 (for example fiber glass material) is set, this connection material for example utilizes resin impregnated and is connected with other described element, for example by means of method for implanting and injecting method.
Shown in Fig. 2 according to an embodiment of fixed element 1 of the present invention longitudinal sectional view along the line of in accompanying drawing 3, representing with II-II.Same member is as representing with identical reference character in other accompanying drawing.
In Fig. 2, particularly see the sectional view of boring 2, and less second boring 6 that is used for possible attachment screw.See among this external Fig. 2 that fixed element 1 preferably dwindles along a slope 5 gradually towards its free end direction, this slope preferably is arranged on the radially inner side of fixed element 1 about circular arc.
Fig. 3 illustrates the plan view according to the fixed element 1 of Fig. 2.
Fig. 4 is illustrated in the enlarged view of the details IV that Fig. 2 frame gets up.As seen from Figure 4, fixed element 1 is used for being fixed on blade joint in the hub portion by means of a set screw 7 and/or also may be fixed on the holding part 8 of a flange-like when making blade joint.Boring be provided with in 6 a possible attachment screw and possible be used to seal around groove 9,10.
Fig. 5 illustrates the side view that is used for according to an embodiment's of spacer element 4 of the present invention manufacturing blank.Spacer element 4 constitutes elongated and 5 dwindles gradually along the slope equally.Therefore each two spacer elements, 4 point symmetry ground as shown in the figure, wherein only produces little pin material 11 by cutting out in the blank.Similarly blank equally also can be used for fixing element 1.
Fig. 6 illustrates the 3rd a distolateral embodiment 4c of spacer element, and it is roughly span stud shape.Correspondingly for example also can observe the end elevation of double T shape.This profile considers that particularly when fixed element 1 has the end face of T shape, thereby easier formation is circular when the structure of spacer element 4 and fixed element 1 formation.
Claims (29)
1. be used to make the method for the blade joint of the rotor blade that is used for wind energy plant, it has a plurality of fixed elements (1) that are arranged on the circular arc, be used for blade joint is fixed on a hub portion, it is characterized in that, use into the fixed element (1) that piece constitutes, and fixed element (1) connects in plane or the parallel with it plane at one and has roughly tetragonal basically cross section, and described fixed element is arranged on the described circular arc and utilizes the spacer element (4a of bar shaped basically, it is directed and have roughly T shape or a horseshoe nail shape or roughly trapezoidal cross section that the 4b) layout that separates each other, described spacer element are approximately perpendicular to described connection plane.
2. the method for claim 1 is characterized in that, described fixed element equidistantly is provided with each other.
3. the method for claim 1 is characterized in that, the described cross section of fixed element (1) is an essentially rectangular.
4. the method for claim 1 is characterized in that, the described cross section of fixed element (1) is foursquare.
5. the method for claim 1 is characterized in that, the described cross section of fixed element (1) is trapezoidal.
6. as one of above-mentioned claim 1 to 5 described method, it is characterized in that each two fixed element adjacent one another are utilizes a spacer element to separate each other.
7. method as claimed in claim 5 is characterized in that, described trapezoidal cross section has the shrinking side in the circular arc inner radial.
8. as one of above-mentioned claim 1 to 5 described method, it is characterized in that the structure of being made up of fixed element and spacer element is connected to each other by lamination.
9. method as claimed in claim 8 is characterized in that, laminated film only is set on the radially inner side of described structure and on radial outside.
10. as one of above-mentioned claim 1 to 5 described method, it is characterized in that at least one fixed element and at least one spacer element are filled by the resin in the gap that is made of them and be connected to each other.
11. as one of above-mentioned claim 1 to 5 described method, it is characterized in that, select the circle of a sealing or the circular arc that the conduct of a part circle is used for blade joint, and circular arc according to blade joint, rotor blade comprises one or more such blade joints, and the connection root that makes the rotor blade of making have full circle is used to be connected to hub portion.
12. method as claimed in claim 11 is characterized in that, described part circle is a semicircle.
13., it is characterized in that blade joint connects the plane from one and constitutes about an arc axis towards the rotor blade tip direction as one of above-mentioned claim 1 to 5 described method asymmetricly.
14. method as claimed in claim 13 is characterized in that, built-in fitting or attaching part provided the part of a supporting surface shape or wing shape in the end regions freely already at it.
15. as one of above-mentioned claim 1 to 5 described method, it is characterized in that, blade joint is provided with separating film at least in a part area when it is made, described separating film stays continuous still coarse surface after the avulsion again at it, and this surface can be further processed.
16. method as claimed in claim 15 is characterized in that, this surface can be by japanning.
17. be used for the blade joint of the rotor blade of wind energy plant, it has a plurality of fixed elements (1) that are provided with on a circular arc, to be used for that blade joint is fixed on a hub portion, it is characterized in that, the fixed element (1) that becomes piece to constitute is arranged on the described circular arc and utilizes the spacer element (4a of bar shaped basically, 4b) separate each other, described fixed element (1) connects in plane or the parallel with it plane at one and has roughly tetragonal basically cross section, and it is directed and have roughly T shape or a horseshoe nail shape or roughly trapezoidal cross section that described spacer element is approximately perpendicular to described connection plane.
18. blade joint as claimed in claim 17 is characterized in that, described fixed element equidistantly is provided with each other.
19. blade joint as claimed in claim 17 is characterized in that, the described cross section of fixed element (1) is an essentially rectangular.
20. blade joint as claimed in claim 17 is characterized in that, the described cross section of fixed element (1) is foursquare.
21. blade joint as claimed in claim 17 is characterized in that, the described cross section of fixed element (1) is trapezoidal.
22., it is characterized in that the structure of being made up of fixed element and spacer element is connected to each other by lamination as one of above-mentioned claim 17 to 21 described blade joint.
23. blade joint as claimed in claim 22 is characterized in that, laminated film only is set on the radially inner side of described structure and on radial outside.
24., it is characterized in that at least one fixed element and at least one spacer element are filled by the resin in the gap that is made of them and be connected to each other as one of above-mentioned claim 17 to 21 described blade joint.
25. as one of above-mentioned claim 17 to 21 described blade joint, it is characterized in that, blade joint constitutes circular arc, circle or a part circle as a sealing, and circular arc according to blade joint, rotor blade comprises one or more such blade joints, and the connection root that makes the rotor blade of making have full circle is used to be connected to hub portion.
26. blade joint as claimed in claim 25 is characterized in that, described part circle is a semicircle.
27. as one of above-mentioned claim 17 to 21 described blade joint, it is characterized in that, blade joint connects the plane from one and constitutes about a circular shape axis towards the rotor blade tip direction asymmetricly, and built-in fitting or attaching part provided the part of a supporting surface shape or wing shape in the end regions freely already at it.
28. as one of above-mentioned claim 17 to 21 described blade joint, it is characterized in that, but blade joint has continuous coarse surface by means of the avulsion again of separating film by separating film in a part area when it is made at least, and this surface can be further processed.
29. blade joint as claimed in claim 28 is characterized in that, this surface can be by japanning.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008021498A DE102008021498A1 (en) | 2008-04-29 | 2008-04-29 | Method for manufacturing a blade connection of a rotor blade, a blade connection and a fastening element for a blade connection |
| DE102008021498.1 | 2008-04-29 | ||
| PCT/DE2009/000488 WO2009132612A1 (en) | 2008-04-29 | 2009-04-08 | Method for establishing a blade connection of a rotor blade, a blade connection and a securing element for a blade connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101970860A CN101970860A (en) | 2011-02-09 |
| CN101970860B true CN101970860B (en) | 2013-07-24 |
Family
ID=41102797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801150874A Active CN101970860B (en) | 2008-04-29 | 2009-04-08 | Method for establishing a blade connection of a rotor blade, a blade connection and a securing element for a blade connection |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8727731B2 (en) |
| EP (1) | EP2283231B2 (en) |
| CN (1) | CN101970860B (en) |
| AT (1) | ATE548563T1 (en) |
| BR (1) | BRPI0911877B1 (en) |
| DE (2) | DE102008021498A1 (en) |
| DK (1) | DK2283231T4 (en) |
| ES (1) | ES2382439T5 (en) |
| WO (1) | WO2009132612A1 (en) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008012664A1 (en) | 2008-01-30 | 2009-08-06 | Repower Systems Ag | Wind turbine and a tower or tower segment and a door frame for it |
| GB0822681D0 (en) * | 2008-12-12 | 2009-01-21 | Aviat Entpr Ltd | Rotor blades |
| DE102010011549A1 (en) | 2010-03-15 | 2011-09-15 | Repower Systems Ag | Maintenance azimuth angle |
| DE202010013535U1 (en) * | 2010-09-24 | 2010-12-02 | Repower Systems Ag | Blade connection of a rotor blade of a wind energy plant |
| US9976537B2 (en) * | 2011-04-11 | 2018-05-22 | Lm Wp Patent Holding A/S | Wind turbine blade comprising cylindrical metal inserts in a root region thereof |
| DK2532880T3 (en) | 2011-06-10 | 2014-03-17 | Siemens Ag | A rotor blade for a wind turbine |
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Also Published As
| Publication number | Publication date |
|---|---|
| ES2382439T3 (en) | 2012-06-08 |
| EP2283231B1 (en) | 2012-03-07 |
| WO2009132612A1 (en) | 2009-11-05 |
| ES2382439T5 (en) | 2017-08-21 |
| DK2283231T3 (en) | 2012-06-11 |
| EP2283231B2 (en) | 2017-03-08 |
| ATE548563T1 (en) | 2012-03-15 |
| BRPI0911877B1 (en) | 2020-04-28 |
| DK2283231T4 (en) | 2017-05-08 |
| BRPI0911877A2 (en) | 2018-08-14 |
| DE112009001589A5 (en) | 2011-03-31 |
| CN101970860A (en) | 2011-02-09 |
| US8727731B2 (en) | 2014-05-20 |
| EP2283231A1 (en) | 2011-02-16 |
| DE102008021498A1 (en) | 2009-11-05 |
| US20110044817A1 (en) | 2011-02-24 |
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